[1] After his father's death in 1830, Matlack received the 234 acres (95 ha) family farm and a hotel in Milltown called "Sheaf of Wheat" (later the Milltown Hotel).
He served as tax collector, assessor, auditor, school director and justice of the peace of East Goshen Township for three terms.
[1][2][3] Matlack married Phoebe Bishop, of Delaware County on March 4, 1854.
They had two children, Joseph E. and Emma W.[1] He was a deacon, trustee, clerk and Sunday school superintendent of Goshen Baptist Church.
[1] Matlack died on April 5, 1893, in East Goshen Township.